Leather-staking machine



(No Model.)

I R. HOLMES. LEATHER STAKING MACHINE.

No. 538,914. Patented May '7, 1895.

A 7'TOHNEYS.

' UNITED STATES PATENT OFFICE.

RICHARD HOLMES, OF CRAMERS HILL, NEW JERSEY.

LEATHER-STAKING MACHINE.

SYECIFICATIONI formingpart of Letters Patent No. 538,914, dated May 7,1895. Application filed January 1895. Serial No. 534,986- (No model.)

To wZZ whom it may concern.-

Be it known that I, RICHARD HOLMES, of

' North Oramers Hill, in the county of Camden and State of New Jersey,have invented a new and Improved Leather-Staking Machine, of which thefollowing is a full, clear, and exact description.

My invention relates to improvements in leather or skin stakingmachines, such as employ a main and blind blade and a roller which ismovable up and down on the blades.

The object of my invention is to arrange an extra or supplemental bladewhich, in connection with the roller and the blades usually employed,gives to the machine a double action and enables it to work rapidly onaskin, and also to thoroughly stretch and work the skin so as to stakeit properly and also-to in crease its measurement.

To these ends my invention consists of certain features of constructionand combinations of parts. which will be hereinafter described andclaimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a vertical cross-section on the line 1 1 of Fig. 2 of astaking-machine, showing my improvements. Fig. 2 is a broken plan viewof the machine. Fig. 3 is a crosssection through the blade forming apart of my invention, and Fig. 4 is a detail perspective View of thehead which carries the several blades.

I have shown my invention in connection with an ordinary staking machinewhich has a lower jaw 10 slidable in a suitable frame 11, an upper jaw12 fulcrumed on the lower jaw as shown at 13 and adapted to move up anddown, a roller .14 at the rear end of the upper jaw, a pitman 15 toengage the roller 14 and tilt the upper jaw, a crank 16 to actuate thepitman, and a driving shaft 17 to work the crank.

All the above mechanism is not shown nor described with much detail,because it forms no part of my invention.

The machine is also provided with a table 19 which has a slot 18 beneathwhich the several blades of the machine are held, the slot beingopposite the jaws 10 and 12, so that the latter may move its roller downthrough blades 22 and 23 over which is held the roller 24 which iscarried by the jaw 12 and is adapted to move up and down against theblades.

My improvement lies in the raised extra blade 25, which is held in frontof the roller and is slotted vertically, as shown at 26 in Fig. 3, toreceive the bolts 27 by which it is held to the supplemental head 28which in turn is fastened by bolts 29 to the main head 21. The slot 26permits the blade to be adjusted up and down to regulate thepressure onthe skin, but the extra blade may be held and connected with the mainhead in any other suitable manner than that just described, Withoutdeparting from the principle of my invention.

The machine is worked in precisely the usual way, the skin being betweenthe roller 24 and the blades, as shown by dotted lines in Fig. 1., Whenthe roller is depressed it forces the skin downward over the blade 22and between it and the blade 23 in the ordinary way, and, at thesametime, the skin isdrawn over the extra blade 25, thus giving anadditional stretch to the skin so that a double action takes place,twice the amount of stretching and scraping being given to the skin asis given by the usual method.

Having thus described my invention, I claim as new and desire to secureby Letters Patent-- 1. In a staking machine, the combination with themain blade and the movable roller opposite the blade, of an auxiliaryscraping blade located in advance of the roller, substantially asdescribed.

2. In a staking machine, the combination with the main blade and themovable roller opposite the blade, of an auxiliary scraping bladelocated in advance of the roller and having its edge facing in the samedirection as that of the main blade, so that the main blade and theauxiliary blade will engage the same side of the material substantiallyas described.

RICHARD HOLMES.

WVitnesses:

NATHAN E. SMITH, CHARLES L. PARMALEE.

